A. the gas rail also bolts into your intake manifold not to the block. and Certainly You may use the LS fuel rail or the b16a2 fuel rail, whichever you want utilizing.Mar eight, 2012 #3 Also depends on the build ideas...B18B1 engine is perfect for a forced induction set up, even though i think the B16A2 is best for a N/A setup. If you propose on ma